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Re: SPARQL Extension Functions Survey

From: Leigh Dodds <leigh.dodds@talis.com>
Date: Wed, 7 Oct 2009 09:00:20 +0100
Message-ID: <f323a4470910070100h3ca4bad2g498f74c07389dbdc@mail.gmail.com>
To: Jürgen Jakobitsch <jakobitschj@punkt.at>
Cc: public-sparql-dev@w3.org
Hi Jürgen,

2009/10/6 Jürgen Jakobitsch <jakobitschj@punkt.at>:
> hi leigh,
>
> there might be not much of a documentation for sesame sparql functions,
> but they do exist and are pretty easy to implement.
>
> checkout the the org.openrdf.query.algebra package in their apidoc or
> at their source repository
> @ http://repo.aduna-software.org/svn/org.openrdf/sesame/

Thanks for the pointer, I'll do some digging around and see what I can
unearth and will make sure they get added to the list.

> i personally implemented a namespace filterfunction
>
> http://www.openrdf.org/forum/mvnforum/viewthread?thread=1816#6651
>
> just for fun.
>
> and a PorterStem function which currently only works in SERQL.

I'm excluding extensions in SERQL (and other query language variants)
because I initially want to focus on stuff that can be used right now
in one or more SPARQL implementations. I'm sure there's been lots of
experimentation in other languages though that could be carried
forward.

Cheers,

L.

-- 
Leigh Dodds
Programme Manager, Talis Platform
Talis
leigh.dodds@talis.com
http://www.talis.com
Received on Wednesday, 7 October 2009 08:00:53 UTC

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